• Thermal Stability: SiC's high thermal conductivity helps dissipate the heat generated by two sets of seal faces, preventing barrier fluid overheating.
• Universal O-Ring Grooves: Designed with standard O-ring groove dimensions, allowing easy switching between NBR, FKM, or FFKM elastomers based on chemical needs.
Key Features
• Component Kit: Provides the individual rotary and stationary parts needed to build a double seal arrangement in a custom stuffing box.
• Hard-Face Reliability: Features inboard and outboard silicon carbide faces to handle abrasive process fluids and barrier fluids simultaneously, while maintaining the integrity of the O ring mechanical seal secondary sealing interface.
• Customizability: Allows pump OEMs and repair shops to configure back-to-back or tandem seals tailored to specific pump chamber dimensions.
Technical Specs | Materials | ||
Mediums | Water, oil, weak acids, weak alkali, etc. | Stationary Ring | Ceramic/Sic/TC |
Temperature | -20℃ to 180℃ | Secondary Seal | NBR/EPDM/Viton |
Pressure | ≤1MPa | Rotary Ring | Carbon/Sic/TC |
Speed | ≤15m/s | Spring and Metal Part | Stainless Steel |


Product Specifications
| Metric Shaft Size D1 | Size Code | D3 | D7 | L1 | L4 |
| 10.0 | 0100 | 20.0 | 21.0 | 17.5 | 10.0 |
| 12.0 | 0120 | 22.0 | 23.0 | 17.5 | 10.0 |
| 14.0 | 0140 | 25.0 | 25.0 | 17.5 | 10.0 |
| 16.0 | 0160 | 27.0 | 27.0 | 19.5 | 10.0 |
| 18.0 | 0180 | 30.0 | 33.0 | 20.5 | 11.5 |
| 20.0 | 0200 | 32.0 | 35.0 | 22.0 | 11.5 |
| 22.0 | 0220 | 35.0 | 37.0 | 23.5 | 11.5 |
| 24.0 | 0240 | 38.0 | 39.0 | 25.0 | 11.5 |
| 25.0 | 0250 | 40.0 | 40.0 | 26.5 | 11.5 |
| 28.0 | 0280 | 43.0 | 43.0 | 26.5 | 11.5 |
| 30.0 | 0300 | 45.0 | 45.0 | 25.0 | 11.5 |
| 32.0 | 0320 | 47.0 | 48.0 | 28.5 | 11.5 |
| 35.0 | 0350 | 50.0 | 50.0 | 28.5 | 11.5 |
| 38.0 | 0380 | 56.0 | 56.0 | 32.0 | 14.0 |
Workshop
This workshop is equipped with professional processing equipment and integrated with standardized material warehousing management, enabling a one-stop production process from precision machining to finished o ring mechanical seal product delivery. It ensures part machining accuracy and production efficiency, meeting various high-specification manufacturing requirements.




Product Research, Development and Testing
Our Product R&D and Testing focuses on optimizing seal performance through advanced simulation and material analysis. All o ring mechanical seals undergo rigorous trials, including thermal cycling and pressure tests, to ensure durability, minimal leakage, and long service life in demanding industrial environments.




Industry Solutions




Case Study
Pump Repair Shop: A repair shop needed to rebuild a custom double-seal mixer. OEM parts were obsolete. We supplied these SiC O-ring components. The shop machined a custom gland, installed our components, and restored the mixer to service in 3 days.
Testimonials
High quality SiC faces. We use these components to build custom o ring mechanical seals for our clients. The dimensions are always spot on.
—Custom Seal Shop, Singapore
FAQs about o ring mechanical seals for High Temperature Pumps
Q: Is this a pre-assembled cartridge?
A: No, these are component parts (rotaries and stationaries). You need to install them into your pump's existing gland and shaft sleeve. This offers flexibility for custom pumps but requires skilled installation.

Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.
E-mail: gechacha@aliyun.com
Mobile: +86-18758835650
WhatsApp: +86-18758835650
Add: No8-2, Jinsha road Yuelin Street, Fenghua District, Ningbo, Zhejiang